Safari 15.6 + OXX 11.6.8 crashes. Unable to use Safari post upgrade.

After updating to OSX 11.6.8 + Safari 15.6, Safari and several related services crash. I am no longer able to run Safari.

Two crashes follow:

Process:         SafariBookmarksSyncAgent [2794]

Path:          /Library/Apple/*/SafariSupport.bundle/Contents/MacOS/SafariBookmarksSyncAgent

Identifier:       SafariBookmarksSyncAgent

Version:         16613 (16613.3.9.1.7)

Build Info:       SafariBookmarksSyncAgent-7613003009001007~7 (613G33)

Code Type:        X86-64 (Native)

Parent Process:     ??? [1]

Responsible:       SafariBookmarksSyncAgent [2794]

User ID:         501

Date/Time:        2022-07-25 10:59:06.876 -0700

OS Version:       macOS 11.6.8 (20G730)

Report Version:     12

Anonymous UUID:     095BBDC9-156B-72C7-9325-6643FCD68EBB

Time Awake Since Boot: 730 seconds

System Integrity Protection: enabled

Crashed Thread:     0

Exception Type:     EXC_CRASH (SIGABRT)

Exception Codes:     0x0000000000000000, 0x0000000000000000

Exception Note:     EXC_CORPSE_NOTIFY

Termination Reason:   DYLD, [0x4] Symbol missing

Application Specific Information:

dyld: launch, loading dependent libraries

Dyld Error Message:

  Symbol not found: __ZN3JSC15WeakHandleOwner26isReachableFromOpaqueRootsENS_6HandleINS_7UnknownEEEPvRNS_11SlotVisitorEPPKc

  Referenced from: /System/Library/Frameworks/WebKit.framework/Versions/A/Frameworks/WebCore.framework/Versions/A/WebCore

  Expected in: /Library/Apple/*/JavaScriptCore.framework/Versions/A/JavaScriptCore

 in /System/Library/Frameworks/WebKit.framework/Versions/A/Frameworks/WebCore.framework/Versions/A/WebCore

Process:         Safari [3348]

Path:          /Applications/Safari.app/Contents/MacOS/Safari

Identifier:       com.apple.Safari

Version:         15.6 (16613.3.9.1.7)

Build Info:       Safari-7613003009001007~8 (613G33)

Code Type:        X86-64 (Native)

Parent Process:     ??? [1]

Responsible:       Safari [3348]

User ID:         501

Date/Time:        2022-07-25 11:07:10.974 -0700

OS Version:       macOS 11.6.8 (20G730)

Report Version:     12

Anonymous UUID:     095BBDC9-156B-72C7-9325-6643FCD68EBB

Time Awake Since Boot: 1200 seconds

System Integrity Protection: enabled

Crashed Thread:     0

Exception Type:     EXC_CRASH (SIGABRT)

Exception Codes:     0x0000000000000000, 0x0000000000000000

Exception Note:     EXC_CORPSE_NOTIFY

Termination Reason:   DYLD, [0x4] Symbol missing

Application Specific Information:

dyld: launch, loading dependent libraries

Dyld Error Message:

  Symbol not found: __ZN3JSC15WeakHandleOwner26isReachableFromOpaqueRootsENS_6HandleINS_7UnknownEEEPvRNS_11SlotVisitorEPPKc

  Referenced from: /System/Library/Frameworks/WebKit.framework/Versions/A/Frameworks/WebCore.framework/Versions/A/WebCore

  Expected in: /Library/Apple/*/JavaScriptCore.framework/Versions/A/JavaScriptCore

 in /System/Library/Frameworks/WebKit.framework/Versions/A/Frameworks/WebCore.framework/Versions/A/WebCore